Monday Update / Discussion - Winter Weather This Week

By Rod Hill on 2020-01-13

Colder air is on track to arrive Monday evening as all showers will turn to snow.  Overnight winds

will remain from the west, which may hold ground temps in Portland at 32 degrees or slightly 

warmer.   However, freezing temps for much of the valley is a good bet and dustings of snow

to 2” on the ground at sea level will be a possibility by early Tuesday morning. 

Precipitation Monday night and Tuesday will be scattered, meaning snow accumulations will also

be scattered.  During the day Tuesday, winds remain from the west and daytime temps will warm into

the upper 30s.

COLD EAST WINDS WILL START TO BLOW EARLY WEDNESDAY MORNING, LOCKING PORTLAND

AND MUCH OF THE VALLEY BELOW FREEZING .

Look for Wednesday snow flurries with east gusts to 45 mph near the gorge.  Snow will pick up Wednesday

late afternoon or evening and accumulations of 6” or more through Thursday morning are a good bet at this

time.  

During the day Thursday, as a big low approaches, wind fields from the south may develop, producing warming

for parts of the valley and a transition to rain, while near gorge locations continue to see east winds and snow

or ice.  Complete warming and the “shut off” of gorge east winds is an unknown, but may occur Friday or

Saturday. 

Rod Hill